<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
        <meta http-equiv="X-UA-Compatible" content="ie=edge">
        <title>Document</title>
        <!--
        * @作者: 陈会丽 *
        * @时间：2024-2025-1 *
        -->
    </head>
    <body>
        <ul>
            <li>1</li>
            <li>2</li>
            <li>3</li>
            <li>4</li>
            <li>5</li>
            <li>6</li>
            <li>7</li>
            <li>8</li>
            <li>9</li>
            <li>10</li>
            <li>11</li>
            <li>12</li>
            <li>13</li>
        </ul>
        <style>
            *{
            margin:0;
            padding:0;
        }
        ul{
            list-style: none;
        }

        ul{
            margin:10px auto;
            width: 600px;
            height: 400px;
            border:5px solid gray;
            position: relative;
        }
        li{
            width: 60px;
            height: 200px;
            position: absolute;
            left: 50%;
            margin-left: -30px;
            bottom: 30px;
            text-align: center;
            transform-origin: bottom center;

            /* 调整中心点 */

            border-radius: 10px;
            transition:all 2s;
        }
         /* 除了第7个， 其他的都透明 */

         ul li:not(:nth-child(7)) {
            opacity: 0;
        }

        ul:hover li {
            opacity: 1;
        }

        ul li:nth-child(1),ul li:nth-child(13){
            background:purple;
        }

        ul li:nth-child(2),ul li:nth-child(12){
            background:darkblue;
        }
        ul li:nth-child(3),ul li:nth-child(11){
            background:deeppink;
        }

        ul li:nth-child(4),ul li:nth-child(10){
            background:deepskyblue;
        }

        ul li:nth-child(5),ul li:nth-child(9){
            background:green;
        }

        ul li:nth-child(6),ul li:nth-child(8){
            background:yellow;
        }

        ul li:nth-child(7){
            background:red;
        }
        ul:hover li:nth-child(1){
            transform: rotate(90deg);
        }
        ul:hover li:nth-child(13){
            transform: rotate(-90deg);
        }
        ul:hover li:nth-child(2){
            transform: rotate(75deg);
        }
        ul:hover li:nth-child(12){
            transform: rotate(-75deg);
        }
        ul:hover li:nth-child(3){
            transform: rotate(60deg);
        }
        ul:hover li:nth-child(11){
            transform: rotate(-60deg);
        }
        ul:hover li:nth-child(4){
            transform: rotate(45deg);
        }
        ul:hover li:nth-child(10){
            transform: rotate(-45deg);
        }
        ul:hover li:nth-child(5){
            transform: rotate(30deg);
        }
        ul:hover li:nth-child(9){
            transform: rotate(-30deg);
        }
        ul:hover li:nth-child(6){
            transform: rotate(15deg);
        }
        ul:hover li:nth-child(8){
            transform: rotate(-15deg);
        }
        </style>
    </body>
</html>